Examine source code of Floating Note

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.0.0",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "identity"
  ],
  "action": {
    "default_title": "Floating Note",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "lib/i18n.js",
        "lib/storage.js",
        "lib/markdown.js",
        "content/styles.js",
        "content/drag.js",
        "content/ui.js",
        "content/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "commands": {
    "toggle-note": {
      "suggested_key": {
        "default": "Alt+Q"
      },
      "description": "__MSG_cmdToggleNote__"
    },
    "new-note": {
      "suggested_key": {
        "default": "Alt+X"
      },
      "description": "__MSG_cmdNewNote__"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "_locales/*/messages.json"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "optional_host_permissions": [
    "https://www.googleapis.com/*"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "floating-note@floatingnote.app",
      "strict_min_version": "143.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "authenticationInfo",
          "browsingActivity"
        ]
      }
    }
  }
}